Home / 912,990.63-1,368,595.94-380,663.89

Finding the Fourth Proportional to 912,990.63, 1,368,595.94 and 380,663.89

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Solution

The fourth proportional to 912,990.63, 1,368,595.94 and 380,663.89 is: 570,624.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,990.63 : 1,368,595.94 = 380,663.89 : x
  2. Step 2: Convert to fraction form
    912,990.63/1,368,595.94 = 380,663.89/x
  3. Step 3: Cross multiply
    912,990.63x = 1,368,595.94 × 380,663.89
  4. Step 4: Simplify right side
    912,990.63x = 520,975,054,166.03
  5. Step 5: Solve for x
    x = 520,975,054,166.03/912,990.63
  6. Step 6: Final answer
    x = 570,624.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.